Table 3

Probability of parametrial involvement according to pre-operative factors

	Risk of parametrial involvement (%)	95% CI	SLN status	Tumor size	No of total patients	No of patients with parametrial involvement	% of patients with parametrial involvement
Low-risk	0.9	0.2 to 4.4	Negative	<20 mm	114	1	0.9
Intermediate-risk	4.6	0.5 to 31.5	ITC	<20 mm	3	0	0
	7.9	1.4 to 33.2	MIC or MAC	<20 mm	10	1	10
	8.1	2.8 to 21.3	Negative	≥20 mm	36	3	8.3
High-risk	31.0	7.9 to 70.2	ITC	≥20 mm	6	2	33.3
High-risk	44.3	14.6 to 78.6	MIC or MAC	≥20 mm	5	2	40.0

ITC, isolated tumor cells; MAC, macrometastases; MIC, micrometastases; SLN, sentinel lymph node.